4.Chemical Bonding and Molecular Structure
medium

આણ્વિય કક્ષકવાદને આધારે નીચે આપેલામાંથી કઇ દ્વિપરમાણ્વીક સ્પીસીઝ પાસે ફક્ત $\pi$ બંધો છે ?

A

$O_2$

B

$N_2$

C

$C_2$

D

$Be_2$

(NEET-2019)

Solution

According to $M.O.T.$ electronic configuration of $\mathrm{C}_{2}$ molecule is

$\sigma 1 \mathrm{s}^{2}<\sigma^{*} 1 \mathrm{s}^{2}<\sigma 2 \mathrm{s}^{2}<\sigma^{*} 2 \mathrm{s}^{2}<\pi_{2} \mathrm{p}_{\mathrm{x}}^{2}=\pi_{2} \mathrm{p}_{\mathrm{y}}^{2}$

so, $\mathrm{C}_{2}$ molecule contain only $\pi$ bond

Standard 11
Chemistry

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